Firearms and Toolmarks 3D Measurement Systems and Measurement Quality Control

This document provides guidelines for the measurements systems which capture data beyond a flat 2D photographic image for Firearm and Toolmark Analysis; in this document these systems are referred to as 3D systems. This document provides guidelines to ensure the instrument's accuracy, to conduct instrument calibration, and to estimate measurement uncertainty for each axis (X, Y, and Z). Included in the standard are procedures for validation of 3D system hardware. The focus of this standard is on the hardware and resulting measurement data, this standard does not include the guidelines for measurement systems software.